}

    private PluginsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {
        this.processedPlugins = new LinkedHashMap<>();
        this.timestamp = (Date) ConfigUtils.getObject(session, new Date(), "maven.startTime");

        /*
         * NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which

import java.util.List;
import java.util.Map;

import com.fasterxml.jackson.databind.JsonNode;
import org.junit.*;

import play.mvc.*;
import play.test.*;
import play.data.DynamicForm;
import play.data.validation.ValidationError;
import play.data.validation.Constraints.RequiredValidator;
import play.i18n.Lang;
import play.libs.F;
import play.libs.F.*;
import play.twirl.api.Content;

import static play.test.Helpers.*;

            ",fid=" + fid +
            ",createAction=0x" + Hexdump.toHexString( createAction, 4 ) +
            ",creationTime=" + new Date( creationTime ) +
            ",lastAccessTime=" + new Date( lastAccessTime ) +
            ",lastWriteTime=" + new Date( lastWriteTime ) +
            ",changeTime=" + new Date( changeTime ) +
            ",extFileAttributes=0x" + Hexdump.toHexString( extFileAttributes, 4 ) +

from typing_extensions import Annotated

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str


@app.post("/login/")
async def login(data: Annotated[FormData, Form()]):

		return nil, nil, err
	}
	data = buf
	if data.validate() != nil {
		data.repair()
	}

	return meta, data, nil
}

type xlMetaV2ShallowVersion struct {
	header xlMetaV2VersionHeader
	meta   []byte
}

//msgp:ignore xlMetaV2 xlMetaV2ShallowVersion

type xlMetaV2 struct {
	versions []xlMetaV2ShallowVersion

	// data will contain raw data if any.

        }
    }

    private final PluginInfo pluginInfo;

    PluginsMetadata(PluginInfo pluginInfo, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), (Path) null, timestamp);
        this.pluginInfo = pluginInfo;
    }

    PluginsMetadata(PluginInfo pluginInfo, Path path, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), path, timestamp);
        this.pluginInfo = pluginInfo;
    }

                                            <c:forEach var="data" varStatus="s"
                                                       items="${relatedQueryItems}">
                                                <tr
                                                        data-href="${contextPath}/admin/relatedquery/details/4/${f:u(data.id)}">
                                                    <td>${f:h(data.term)}</td>

        accessTokenPager.clear();
        return asHtml(path_AdminAccesstoken_AdminAccesstokenJsp).renderWith(data -> {
            searchPaging(data, form);
        });
    }

    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "accessTokenItems", accessTokenService.getAccessTokenList(accessTokenPager)); // page navi

        // restore from pager

And in the code, we get a `dict` with all the data sent by the client, **only the data sent by the client**, excluding any values that would be there just for being the default values. To do it we use `exclude_unset=True`. This is the main trick. 🪄

Then we use `hero_db.sqlmodel_update(hero_data)` to update the `hero_db` with the data from `hero_data`.

    * If you didn't use FastAPI and used Starlette directly (or another tool, like Sanic, Flask, Responder, etc) you would have to implement all the data validation and serialization yourself. So, your final application would...